001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.util.bridges.mvc;
016    
017    import com.liferay.portal.kernel.servlet.SessionErrors;
018    
019    import javax.portlet.PortletException;
020    import javax.portlet.PortletRequest;
021    import javax.portlet.PortletResponse;
022    
023    /**
024     * @author Brian Wing Shun Chan
025     */
026    public abstract class BaseActionCommand implements ActionCommand {
027    
028            public boolean processCommand(
029                            PortletRequest portletRequest, PortletResponse portletResponse)
030                    throws PortletException {
031    
032                    try {
033                            doProcessCommand(portletRequest, portletResponse);
034    
035                            return SessionErrors.isEmpty(portletRequest);
036                    }
037                    catch (PortletException pe) {
038                            throw pe;
039                    }
040                    catch (Exception e) {
041                            throw new PortletException(e);
042                    }
043            }
044    
045            protected abstract void doProcessCommand(
046                            PortletRequest portletRequest, PortletResponse portletResponse)
047                    throws Exception;
048    
049    }